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Expired Canadian patentCanada

Marine propulsion apparatus

CA 1328778 C · Owner: Hislop, Douglas Glen · Inventors: Hislop, Douglas Glen

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

P.4, -- ABSTRACT --, Marine propulsion apparatus ( 10 ) is disclosed in which an engine (12) is mounted within a buoyant enclosure (15) which may be connected to a marine vessel (40) which requires propulsion, and drives a propeller (20) through a simple drive system (13 and 18). The apparatus (10) may be fitted into position on pivotal mountings (37) for steering purposes and may itself be fitted with steering means (22 and 42) such that it may be manoeuvered independently of the marine vessel (40) for positioning relative to it. The enclosure (15) is sized to permit access around the engine (12) for in-situ maintenance and repair.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted April 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 26, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 2, 1989
GrantedApril 26, 1994
Term endedApril 26, 2011
Patent numberCA 1328778 C
Classification (IPC)B63B21/56 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedAug 2, 1989Patent grantedApril 26, 1994Term endedApril 26, 2011

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.